Rotary pump.



M. MORTBNSEN.

ROTARY PUMP. APPLICATION FILED DEO.10, 1907.

2 sums-sum 1.

:Rs co., WASHINGYON, n. c

Patented Apr. 20, 1909.

M. MORTENSEN.

' ROTARY.PUMP. nrmouxon FILED mo. 10, 1907.

PatentedApr. 20; 1909.

2 SHEETS-SHEET 2. I

UNITED STATESEATENT OFFICE.

HORTEN MORTENSEN, OF HYDE PARK, MASSACHUSETTS, ASSIGNOR TO OLE MARTINDAHL, OF ROXBURY, BOSTON, MASSACHUSETTS.

ROTARY PUMP.

Specification of Letters Patent.

Application filed December 10, 1907.

Patented April 20, 1909.

Serial NO. 405,930.

To all whomit may concern:

Be it known that I, MoRrnN MoRrENsEN,

a subject of Norway, residing at Hyde Park,

in the county of Norfolk and State of Massachusetts, have inventedcertain new and useful Improvements in Rotary Pumps, of which thefollowing is a specification, refer ence being had to the accompanyingdrawm s.

My invention relates to improvements in rotary pumps; and an object ofmy invention is to provide a rotary pump which will be simple inconstruction, comparatively cheap in manufacture and most eflicient inuse.

In the drawings illustrating the principle of my invention and the bestmode now known to me of applying that principle, Figure 1 is a sideelevation of my new ump Fig. 2 is a central vertical section t ereof;Fig. 3 is a view of the interior of the ump, the face-plate being shownremoved; ig. 4 shows the inner face of the face-plate Fig. 5 is a viewlooking in the direction of the arrow in Fig. 1; Fig. 6 is a section onthe line AA of Fig. 1; Fig. 7 is a detail in pers ective of thedrum-carrier; Fig. 8 is a detai showing the slidable abutment; Fig. 9 isa detail showing the rear face of the drum; Fig. 10 is a section on theline BB of Fig. 3; Fig. 11 is a detail showing the inlet and outletports; apd Fig. 12 is a detail showing the drum in p an.

The casing a is cylindrical in shape and is provided with bracket-lugs bby which the casing may be attached to any suitable suport. To thecasing a is fastened by screwolts c the face-plate d. The inner face ofthe latter is formed with a ring-shaped or cylindrical wall 6 which isconcentric with the face-plate and from which extends a radial partitionwallf formed with a groove 9 in its inner radial edge. The face-plate dis further formed with a circular groove h in which is placed packing ithat serves to seal the joint between the face-plate and the casing. Inthe latter is journaled a shaft 7' upon the outer end of which ismounted a driving wheel 7c and upon the inner end of which is mounted adrum-carrier m consisting of a disk n from which projects inwardly thestud around which is coiled a spring wire p one end of which is heldfast in the notch or recess g in the edge of the disk and the other endof which presses outwardly the drum-plate 1" which is pivoted at s onthe disk at and which is formed with a pivot-stud t. The drum-plate r isfurther formed with a notch or recess 11, adapted to receive a stoplug ewhich projects from the disk n and limits the inward movement of thedrumplate.

Upon the pivot-stud t is mounted the hollow drum w, the former passingthrough a central hole at in the latter; and by reference to thedrawings, it will be seen that the drum w is mounted eccentrically withrespect to the shaft 9' which drives it through the drumcarrier m. Nearits peripheral edge the hollow drum w is formed with a recess y in thebottom of which is formed a hole 3. The recess is shaped to receive thehead 2 of the slidable abutment 2, while the hole 8 in its bottom isadapted to receive the stud 4 which projects from the head 2, wherebythe hollow drum w is pivotally connected to the inner end of theslidable abutment 2. The latter works back and forth in a stufling-boX6, as the drum w moves in the casing; and it is guided by the engagementof its rib in the groove 9 in the radial partition wall f. The hollowdrum 'w is formed with an opening 7 in its cylindrical wall throughwhich opening passes the radial partition wall f just referred to,whereby the opening 7 is divided into an inlet opening 8 and an outletopening 9. The casing a is formed with an inlet port and an outlet port11; and the former communicates with the intake pipe 12, while thelatter communicates with the discharge pipe 13. The outer end of theradial partition wall extends to and abuts against the part 14 of thecasing a which separates the ports 10 and 11.

From the foregoing description and an inspection of the drawings, itwill be noted that the hollow drum to is held firmly but with a yieldingpressure against the inner cylindrical wall of the chamber 15. Hence,the tendency will be to cause the drum and the wall of the chamber towear to a true fit, if they are not exactly so at the start; and,further, allowance is made by the yielding nature of the mounting forthe passage of any sand or grit which enters between the drum and theopposed wall against which it rubs. As the driving shaft 7' turns, thehollow drum w is carried back and forth along the radial partition wallf and also around the chamber 15, rubbing against the wall thereof.Water will be admitted to the chamber 15 between the wall of the latterand the wall of the drum; and water will also be admitted to the insideof the drum w in the space between its wall and the wall f. As the drumw moves around in the chamber 15, it will force the water out throughthe opening 9, port 1.1 and discharge pipe 18.

I claim:

In a rotary pump of the character described, the combination with acasing formed with a recess and with inlet and outlet ports; adrivingshait journaled in said casing; a disk mounted on the inner endof said shaft and in said recess; a spring-pressed drumplate pivotallymounted on said disk; a hollow cylindrical drum pivotally mounted onsaid drum-plate and formed with an opening which communicates with saidports; a slidable abutment pivotally connected to said drum and formedwith a guide-rib; and a face-plate which is fastened to said casing andis formed with an inwardly-extending cylindrical flange and with apartition Wall grooved to receive said guide-rib, said flange lyingWithin said hollow drum.

In witness whereof I have hereunto set my hand at Boston, in the countyof Suffolk and State of Massachusetts this third day of December, 1907,in the presence of the two undersigned witnesses.

MORTEN MORTENSEN.

Witnesses:

EDWARD N. CARPENTER, JAMES HAi-IilLTON.

